Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual posição Karl Singer joga?
 ###Tabelas: CREATE TABLE top_50_quarterbacks_in_nfl_history (top_50_quarterbacks_in_nfl_history_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Quarterback VARCHAR, Seasons VARCHAR, Teams VARCHAR, Team Wins INT, Team Losses INT, Career Wins INT, Career Losses INT, Ties INT) CREATE TABLE 1968 (1968_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, City VARCHAR, Opponent VARCHAR, Results¹ VARCHAR, Type of game VARCHAR) CREATE TABLE round_one (round_one_id AUTO_INCREMENT PRIMARY KEY, Pick INT, AFL Team VARCHAR, Player VARCHAR, Position VARCHAR, College VARCHAR) CREATE TABLE past_champions_and_grand_finalists (past_champions_and_grand_finalists_id AUTO_INCREMENT PRIMARY KEY, Year INT, Champion VARCHAR, Grand Finalist VARCHAR, Champion Team Members VARCHAR, Grand Finalists VARCHAR) CREATE TABLE recent_champions (recent_champions_id AUTO_INCREMENT PRIMARY KEY, Season VARCHAR, Premier Division VARCHAR, Division One VARCHAR, Division Two VARCHAR, Division Three VARCHAR, Division Four VARCHAR, Division Five VARCHAR)  
SELECT Position FROM round_one WHERE Player = karl singer